The evolution from simple multicellular organisms to complex multicellular organisms required:
A)a mechanism of cell-cell adhesion.
B)an ability to respond to the environment.
C)the development of a system that enabled bulk flow.
D)cell-surface receptors.

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The Answer of The evolution from simple multicellular organisms to complex multicellular organisms required:
A)a mechanism of cell-cell adhesion.
B)an ability to respond to the environment.
C)the development of a system that enabled bulk flow.
D)cell-surface receptors.

The Evolution from Simple Multicellular Organisms to Complex Multicellular Organisms